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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-14 19:29:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-14 19:29:55 -0700
commite253d98f5babbec7e6ced810f7335b265a7f7e83 (patch)
treecd688c4ba8d43edb12bbeb523393879f7c212b65 /fs/ext4
parent0f0d12728e56c94d3289c6831243b6faeae8a19d (diff)
parentc35fc7a5abae9c154dd6f8c0b288462342facd45 (diff)
Merge branch 'work.read_write' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull nowait read support from Al Viro: "Support IOCB_NOWAIT for buffered reads and block devices" * 'work.read_write' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: block_dev: support RFW_NOWAIT on block device nodes fs: support RWF_NOWAIT for buffered reads fs: support IOCB_NOWAIT in generic_file_buffered_read fs: pass iocb to do_generic_file_read
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/file.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index da9c6948ad25..b1da660ac3bc 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -223,6 +223,8 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (IS_DAX(inode))
return ext4_dax_write_iter(iocb, from);
#endif
+ if (!o_direct && (iocb->ki_flags & IOCB_NOWAIT))
+ return -EOPNOTSUPP;
if (!inode_trylock(inode)) {
if (iocb->ki_flags & IOCB_NOWAIT)
@@ -431,9 +433,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
return ret;
}
- /* Set the flags to support nowait AIO */
- filp->f_mode |= FMODE_AIO_NOWAIT;
-
+ filp->f_mode |= FMODE_NOWAIT;
return dquot_file_open(inode, filp);
}